芳香族聚酰胺成炭剂的合成及在无卤阻燃剂玻纤增强PP中的应用(英文)  

Aromatic Polyamide Compound as Effective Charring Agent for Halogen-free Flame Retardant Glass Fiber-reinforced Polypropylene

作　　者：李恺丹 许家友[1] 刘杰[1] 胡卫华 岳瑟 

机构地区：[1]广州大学化学化工学院,广东广州510000 [2]佛山市美聚克改性塑料有限公司,广东佛山528000

出　　处：《材料科学与工程学报》2014年第4期469-474,共6页Journal of Materials Science and Engineering

摘　　要：利用酰氯和苯胺合成一种芳香族聚酰胺成炭剂PPTA,使用锥形量热仪、热重分析仪、氧指数仪和垂直燃烧测试技术研究成炭剂PPTA对膨胀型阻燃(IFR)玻纤增强PP的燃烧行为和阻燃性的影响,结果表明:成炭剂PPTA可显著提高GF-PP/IFR体系的阻燃性能并达到V-0级,克服了玻纤"灯芯效应"的影响。FTIR,拉曼和SEM形貌揭示PPTA的加入能促进阻燃体系在燃烧后表面形成均匀、致密的碳层结构,增加碳层的石墨结构含量。An effective charring agent, poly（para-phenylene terephthanlamide） （PPTA）, for halogen- free flame retardant polypropylene was synthesized through solution polycondensation, and the effects of PPTA on flame retardance of glass, fiber-reinforced polypropylene （GF-PP）/IFR system were studied. Thermogravimetric analysis （TGA） data implied that loading of PPTA could improve the thermal stability of GFPP/IFR system. PPTA could considerably enhance the fire retardant performance as evidenced by the increase of limiting oxygen index （LOI） values, the results of UL-94 tests. Scanning electron microscope （SEM）, Fourier transform infrared spectroscopy （FTIR） and Laser Raman spectroscopy （LRS） of the composites revealed that PPTA could promote the formation of compact intumescent charred layers in GF-PP/ IFR system after burning. The problem of ＂candlewick effect＂ relates to the glass fiber is successfully solved by introduction of the charring agent PPTA.

关 键 词：阻燃 玻纤增强PP 成炭剂 芳香族聚酰胺 

分 类 号：TQ314.248[化学工程—高聚物工业]